<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator="/">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区域 -->
    <el-card>
      <!-- 搜索与添加区 -->
      <el-row :gutter="20">
        <el-col :span="7">
          <el-input placeholder="请输入内容" class="input-with-select" v-model="queryInfo.query" @clear="getUserList" clearable>
            <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
        </el-col>
      </el-row>

      <!-- 用户列表区域 -->
      <el-table :data="userList" border stripe>
        <el-table-column type="index"></el-table-column>
        <el-table-column label="姓名" prop="username"></el-table-column>
        <el-table-column label="邮箱" prop="email"></el-table-column>
        <el-table-column label="电话" prop="mobile"></el-table-column>
        <el-table-column label="角色" prop="role_name"></el-table-column>
        <el-table-column label="状态">
          <template slot-scope="scope">
            <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)"></el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作" width="180">
          <template slot-scope="scope">
            <!-- 修改按钮 -->
            <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
            <!-- 删除按钮 -->
            <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)"></el-button>
            <!-- 分配角色按钮 -->
            <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
              <el-button type="warning" icon="el-icon-setting" size="mini"></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>

      <!-- 分页区域 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-size="queryInfo.pagesize"
        :page-sizes="[1, 2, 3, 4]"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total">
      </el-pagination>

      <!-- 添加用户对话框 -->
      <el-dialog title="添加用户" :visible.sync="addDialogVisible" width="50%" @close="addDialogClosed">
        <!-- 内容主体区域 -->
        <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
          <el-form-item label="用户名" prop="username">
            <el-input v-model="addForm.username"></el-input>
          </el-form-item>
          <el-form-item label="密码" prop="password">
            <el-input v-model="addForm.password"></el-input>
          </el-form-item>
          <el-form-item label="邮箱" prop="email">
            <el-input v-model="addForm.email"></el-input>
          </el-form-item>
          <el-form-item label="手机" prop="mobile">
            <el-input v-model="addForm.mobile"></el-input>
          </el-form-item>
        </el-form>
        <!-- 底部区域 -->
        <span slot="footer" class="dialog-footer">
          <el-button @click="addDialogVisible = false">取 消</el-button>
          <el-button type="primary" @click="addUser">确 定</el-button>
        </span>
      </el-dialog>

      <!-- 修改用户对话框 -->
      <el-dialog title="修改用户" :visible.sync="editDialogVisible" width="50%" @close="editDialogClosed">
        <!-- 内容主体区域 -->
        <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
          <el-form-item label="用户名">
            <el-input v-model="editForm.username" disabled></el-input>
          </el-form-item>
          <el-form-item label="邮箱" prop="email">
            <el-input v-model="editForm.email"></el-input>
          </el-form-item>
          <el-form-item label="手机" prop="mobile">
            <el-input v-model="editForm.mobile"></el-input>
          </el-form-item>
        </el-form>
        <!-- 底部区域 -->
        <span slot="footer" class="dialog-footer">
          <el-button @click="editDialogVisible = false">取 消</el-button>
          <el-button type="primary" @click="editUser">确 定</el-button>
        </span>
      </el-dialog>
    </el-card>
  </div>
</template>

<script>
export default {
  data () {
    // 验证邮箱的规则
    var checkEmail = (rule, value, callback) => {
      // 验证邮箱的正则表达式
      const regEmail = /^(([^<>()[\]\\.,;:\s@"]+(\.[^<>()[\]\\.,;:\s@"]+)*)|(".+"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/

      // 校验合格
      if (regEmail.test(value)) {
        return callback()
      } else {
        return callback(new Error('请输入合法的邮箱'))
      }
    }

    // 验证手机号的规则
    var checkMobile = (rule, value, callback) => {
      // 验证手机号的正则表达式
      const regMobile = /^(?:(?:\+|00)86)?1\d{10}$/

      // 校验合格
      if (regMobile.test(value)) {
        return callback()
      } else {
        return callback(new Error('请输入合法的手机号'))
      }
    }

    return {
      // 获取用户列表的参数
      queryInfo: {
        query: '',
        // 当前页数
        pagenum: 1,
        // 当前每页显示数据量
        pagesize: 1
      },
      // 用户列表
      userList: [],
      // 用户总量
      total: 0,
      // 控制添加用户的对话框的显示
      addDialogVisible: false,
      // 控制修改用户的对话框的显示
      editDialogVisible: false,
      // 新添加用户绑定的form内容
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: ''
      },
      // 编辑用户所需要绑定的form内容
      editForm: {
        id: 0,
        username: '',
        email: '',
        mobile: ''
      },
      // 添加表单的验证规则对象
      addFormRules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          { min: 3, max: 10, message: '请保持用户名长度为3-10', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 6, max: 15, message: '请保持密码长度为6-15', trigger: 'blur' }
        ],
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入手机号', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ]
      },
      // 编辑表单的验证规则对象
      editFormRules: {
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入手机号', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ]
      }
    }
  },
  created () {
    this.getUserList()
  },
  methods: {
    // 获取用户列表
    async getUserList () {
      const { data: res } = await this.$http.get('users', { params: this.queryInfo })

      if (res.meta.status !== 200) {
        this.$message.error('获取用户列表失败')
      } else {
        this.userList = res.data.users
        this.total = res.data.total
      }
    },
    // 监听pagesize改变事件
    handleSizeChange (newSize) {
      this.queryInfo.pagesize = newSize
      this.getUserList()
    },
    // 监听 页码值 改变事件
    handleCurrentChange (newCurrent) {
      this.queryInfo.pagenum = newCurrent
      this.getUserList()
    },
    // 当用户状态改变时调用
    async userStateChanged (userinfo) {
      const { data: res } = await this.$http.put(`users/${userinfo.id}/state/${userinfo.mg_state}`)

      if (res.meta.status !== 200) {
        userinfo.mg_state = !userinfo.mg_state

        this.$message.error('用户状态改变失败')
      } else {
        this.$message.success('用户状态改变成功')
      }
    },
    // 当添加用户对话框关闭时调用
    addDialogClosed () {
      this.$refs.addFormRef.resetFields()
    },
    // 新增用户
    addUser () {
      // 预校验
      this.$refs.addFormRef.validate(async valid => {
        if (valid) {
          const { data: res } = await this.$http.post('/users', this.addForm)

          if (res.meta.status !== 201) {
            this.$message.error('添加用户失败')
          } else {
            this.$message.success('添加用户成功')

            // 隐藏添加用户的对话框
            this.addDialogVisible = false
            // 刷新用户列表
            this.getUserList()
            // 重置新增用户表单
            this.$refs.addFormRef.resetFields()
          }
        }
      })
    },
    // 展示编辑用户的对话框
    async showEditDialog (id) {
      this.editDialogVisible = true

      const { data: res } = await this.$http.get(`/users/${id}`)

      if (res.meta.status !== 200) {
        return this.$message.error('查询用户信息失败')
      } else {
        this.editForm = res.data
      }
    },
    // 当编辑用户对话框关闭后
    editDialogClosed () {
      this.$refs.editFormRef.resetFields()
    },
    // 当修改用户后提交时
    editUser () {
      this.$refs.editFormRef.validate(async valid => {
        if (!valid) {
          return
        }

        // 发起修改用户请求
        const { data: res } = await this.$http.put(`users/${this.editForm.id}`, this.editForm)

        if (res.meta.status !== 200) {
          return this.$message.error('修改用户信息失败')
        } else {
          // 隐藏对话框
          this.editDialogVisible = false
          // 刷新用户列表
          this.getUserList()
          // 重置编辑框
          this.$refs.editFormRef.resetFields()

          // 进行提示
          return this.$message.success('修改用户信息成功')
        }
      })
    },
    // 当删除用户触发时
    async removeUserById (id) {
      // 询问用户是否删除数据
      const res = await this.$confirm('是否永久删除该用户？', '提示', {
        confirmButtonText: '确认',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      // ↑捕获错误并返回err

      if (res === 'confirm') {
        const { data: delRes } = await this.$http.delete(`users/${id}`)

        if (delRes.meta.status !== 200) {
          return this.$message.error('删除失败')
        } else {
          // 刷新用户列表
          this.getUserList()

          return this.$message.success('删除成功')
        }
      } else {
        this.$message.info('已经取消删除')
      }
    }
  }
}
</script>

<style lang="less" scoped>
</style>
